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Finding the Fourth Proportional to 8,000.70, 12,002.85 and 4,712.10

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Solution

The fourth proportional to 8,000.70, 12,002.85 and 4,712.10 is: 7,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.70 : 12,002.85 = 4,712.10 : x
  2. Step 2: Convert to fraction form
    8,000.70/12,002.85 = 4,712.10/x
  3. Step 3: Cross multiply
    8,000.70x = 12,002.85 × 4,712.10
  4. Step 4: Simplify right side
    8,000.70x = 56,558,629.49
  5. Step 5: Solve for x
    x = 56,558,629.49/8,000.70
  6. Step 6: Final answer
    x = 7,069.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.